1 /*
2  * Copyright (C) 2009 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #define LOG_TAG "input"
18 #include <utils/Log.h>
19 
20 #include <android/input.h>
21 #include <input/Input.h>
22 #include <input/InputTransport.h>
23 #include <utils/Looper.h>
24 #include <utils/RefBase.h>
25 #include <utils/Vector.h>
26 
27 #include <android_runtime/android_app_NativeActivity.h>
28 #include <android_runtime/android_view_InputQueue.h>
29 #include <android_view_MotionEvent.h>
30 #include <android_view_KeyEvent.h>
31 
32 #include <poll.h>
33 #include <errno.h>
34 
35 using android::InputEvent;
36 using android::InputEventType;
37 using android::InputQueue;
38 using android::KeyEvent;
39 using android::Looper;
40 using android::MotionEvent;
41 using android::sp;
42 using android::Vector;
43 
AInputEvent_getType(const AInputEvent * event)44 int32_t AInputEvent_getType(const AInputEvent* event) {
45     const InputEventType eventType = static_cast<const InputEvent*>(event)->getType();
46     return static_cast<int32_t>(eventType);
47 }
48 
AInputEvent_getDeviceId(const AInputEvent * event)49 int32_t AInputEvent_getDeviceId(const AInputEvent* event) {
50     return static_cast<const InputEvent*>(event)->getDeviceId();
51 }
52 
AInputEvent_getSource(const AInputEvent * event)53 int32_t AInputEvent_getSource(const AInputEvent* event) {
54     return static_cast<const InputEvent*>(event)->getSource();
55 }
56 
AInputEvent_release(const AInputEvent * event)57 void AInputEvent_release(const AInputEvent* event) {
58     delete event;
59 }
60 
AKeyEvent_getAction(const AInputEvent * key_event)61 int32_t AKeyEvent_getAction(const AInputEvent* key_event) {
62     return static_cast<const KeyEvent*>(key_event)->getAction();
63 }
64 
AKeyEvent_getFlags(const AInputEvent * key_event)65 int32_t AKeyEvent_getFlags(const AInputEvent* key_event) {
66     return static_cast<const KeyEvent*>(key_event)->getFlags();
67 }
68 
AKeyEvent_getKeyCode(const AInputEvent * key_event)69 int32_t AKeyEvent_getKeyCode(const AInputEvent* key_event) {
70     return static_cast<const KeyEvent*>(key_event)->getKeyCode();
71 }
72 
AKeyEvent_getScanCode(const AInputEvent * key_event)73 int32_t AKeyEvent_getScanCode(const AInputEvent* key_event) {
74     return static_cast<const KeyEvent*>(key_event)->getScanCode();
75 }
76 
AKeyEvent_getMetaState(const AInputEvent * key_event)77 int32_t AKeyEvent_getMetaState(const AInputEvent* key_event) {
78     return static_cast<const KeyEvent*>(key_event)->getMetaState();
79 }
AKeyEvent_getRepeatCount(const AInputEvent * key_event)80 int32_t AKeyEvent_getRepeatCount(const AInputEvent* key_event) {
81     return static_cast<const KeyEvent*>(key_event)->getRepeatCount();
82 }
83 
AKeyEvent_getDownTime(const AInputEvent * key_event)84 int64_t AKeyEvent_getDownTime(const AInputEvent* key_event) {
85     return static_cast<const KeyEvent*>(key_event)->getDownTime();
86 }
87 
AKeyEvent_fromJava(JNIEnv * env,jobject keyEvent)88 const AInputEvent* AKeyEvent_fromJava(JNIEnv* env, jobject keyEvent) {
89     std::unique_ptr<KeyEvent> event = std::make_unique<KeyEvent>();
90     *event = android::android_view_KeyEvent_obtainAsCopy(env, keyEvent);
91     return event.release();
92 }
93 
AKeyEvent_getEventTime(const AInputEvent * key_event)94 int64_t AKeyEvent_getEventTime(const AInputEvent* key_event) {
95     return static_cast<const KeyEvent*>(key_event)->getEventTime();
96 }
97 
AMotionEvent_getAction(const AInputEvent * motion_event)98 int32_t AMotionEvent_getAction(const AInputEvent* motion_event) {
99     return static_cast<const MotionEvent*>(motion_event)->getAction();
100 }
101 
AMotionEvent_getFlags(const AInputEvent * motion_event)102 int32_t AMotionEvent_getFlags(const AInputEvent* motion_event) {
103     return static_cast<const MotionEvent*>(motion_event)->getFlags() &
104             ~AMOTION_EVENT_PRIVATE_FLAG_MASK;
105 }
106 
AMotionEvent_getMetaState(const AInputEvent * motion_event)107 int32_t AMotionEvent_getMetaState(const AInputEvent* motion_event) {
108     return static_cast<const MotionEvent*>(motion_event)->getMetaState();
109 }
110 
AMotionEvent_getButtonState(const AInputEvent * motion_event)111 int32_t AMotionEvent_getButtonState(const AInputEvent* motion_event) {
112     return static_cast<const MotionEvent*>(motion_event)->getButtonState();
113 }
114 
AMotionEvent_getEdgeFlags(const AInputEvent * motion_event)115 int32_t AMotionEvent_getEdgeFlags(const AInputEvent* motion_event) {
116     return reinterpret_cast<const MotionEvent*>(motion_event)->getEdgeFlags();
117 }
118 
AMotionEvent_getDownTime(const AInputEvent * motion_event)119 int64_t AMotionEvent_getDownTime(const AInputEvent* motion_event) {
120     return static_cast<const MotionEvent*>(motion_event)->getDownTime();
121 }
122 
AMotionEvent_getEventTime(const AInputEvent * motion_event)123 int64_t AMotionEvent_getEventTime(const AInputEvent* motion_event) {
124     return static_cast<const MotionEvent*>(motion_event)->getEventTime();
125 }
126 
AMotionEvent_getXOffset(const AInputEvent * motion_event)127 float AMotionEvent_getXOffset(const AInputEvent* motion_event) {
128     return static_cast<const MotionEvent*>(motion_event)->getRawXOffset();
129 }
130 
AMotionEvent_getYOffset(const AInputEvent * motion_event)131 float AMotionEvent_getYOffset(const AInputEvent* motion_event) {
132     return static_cast<const MotionEvent*>(motion_event)->getRawYOffset();
133 }
134 
AMotionEvent_getXPrecision(const AInputEvent * motion_event)135 float AMotionEvent_getXPrecision(const AInputEvent* motion_event) {
136     return static_cast<const MotionEvent*>(motion_event)->getXPrecision();
137 }
138 
AMotionEvent_getYPrecision(const AInputEvent * motion_event)139 float AMotionEvent_getYPrecision(const AInputEvent* motion_event) {
140     return static_cast<const MotionEvent*>(motion_event)->getYPrecision();
141 }
142 
AMotionEvent_getPointerCount(const AInputEvent * motion_event)143 size_t AMotionEvent_getPointerCount(const AInputEvent* motion_event) {
144     return static_cast<const MotionEvent*>(motion_event)->getPointerCount();
145 }
146 
AMotionEvent_getPointerId(const AInputEvent * motion_event,size_t pointer_index)147 int32_t AMotionEvent_getPointerId(const AInputEvent* motion_event, size_t pointer_index) {
148     return static_cast<const MotionEvent*>(motion_event)->getPointerId(pointer_index);
149 }
150 
AMotionEvent_getToolType(const AInputEvent * motion_event,size_t pointer_index)151 int32_t AMotionEvent_getToolType(const AInputEvent* motion_event, size_t pointer_index) {
152     const MotionEvent& motion = static_cast<const MotionEvent&>(*motion_event);
153     return static_cast<int32_t>(motion.getToolType(pointer_index));
154 }
155 
AMotionEvent_getRawX(const AInputEvent * motion_event,size_t pointer_index)156 float AMotionEvent_getRawX(const AInputEvent* motion_event, size_t pointer_index) {
157     return static_cast<const MotionEvent*>(motion_event)->getRawX(pointer_index);
158 }
159 
AMotionEvent_getRawY(const AInputEvent * motion_event,size_t pointer_index)160 float AMotionEvent_getRawY(const AInputEvent* motion_event, size_t pointer_index) {
161     return static_cast<const MotionEvent*>(motion_event)->getRawY(pointer_index);
162 }
163 
AMotionEvent_getX(const AInputEvent * motion_event,size_t pointer_index)164 float AMotionEvent_getX(const AInputEvent* motion_event, size_t pointer_index) {
165     return static_cast<const MotionEvent*>(motion_event)->getX(pointer_index);
166 }
167 
AMotionEvent_getY(const AInputEvent * motion_event,size_t pointer_index)168 float AMotionEvent_getY(const AInputEvent* motion_event, size_t pointer_index) {
169     return static_cast<const MotionEvent*>(motion_event)->getY(pointer_index);
170 }
171 
AMotionEvent_getPressure(const AInputEvent * motion_event,size_t pointer_index)172 float AMotionEvent_getPressure(const AInputEvent* motion_event, size_t pointer_index) {
173     return static_cast<const MotionEvent*>(motion_event)->getPressure(pointer_index);
174 }
175 
AMotionEvent_getSize(const AInputEvent * motion_event,size_t pointer_index)176 float AMotionEvent_getSize(const AInputEvent* motion_event, size_t pointer_index) {
177     return static_cast<const MotionEvent*>(motion_event)->getSize(pointer_index);
178 }
179 
AMotionEvent_getTouchMajor(const AInputEvent * motion_event,size_t pointer_index)180 float AMotionEvent_getTouchMajor(const AInputEvent* motion_event, size_t pointer_index) {
181     return static_cast<const MotionEvent*>(motion_event)->getTouchMajor(pointer_index);
182 }
183 
AMotionEvent_getTouchMinor(const AInputEvent * motion_event,size_t pointer_index)184 float AMotionEvent_getTouchMinor(const AInputEvent* motion_event, size_t pointer_index) {
185     return static_cast<const MotionEvent*>(motion_event)->getTouchMinor(pointer_index);
186 }
187 
AMotionEvent_getToolMajor(const AInputEvent * motion_event,size_t pointer_index)188 float AMotionEvent_getToolMajor(const AInputEvent* motion_event, size_t pointer_index) {
189     return static_cast<const MotionEvent*>(motion_event)->getToolMajor(pointer_index);
190 }
191 
AMotionEvent_getToolMinor(const AInputEvent * motion_event,size_t pointer_index)192 float AMotionEvent_getToolMinor(const AInputEvent* motion_event, size_t pointer_index) {
193     return static_cast<const MotionEvent*>(motion_event)->getToolMinor(pointer_index);
194 }
195 
AMotionEvent_getOrientation(const AInputEvent * motion_event,size_t pointer_index)196 float AMotionEvent_getOrientation(const AInputEvent* motion_event, size_t pointer_index) {
197     return static_cast<const MotionEvent*>(motion_event)->getOrientation(pointer_index);
198 }
199 
AMotionEvent_getAxisValue(const AInputEvent * motion_event,int32_t axis,size_t pointer_index)200 float AMotionEvent_getAxisValue(const AInputEvent* motion_event,
201         int32_t axis, size_t pointer_index) {
202     return static_cast<const MotionEvent*>(motion_event)->getAxisValue(axis, pointer_index);
203 }
204 
AMotionEvent_getHistorySize(const AInputEvent * motion_event)205 size_t AMotionEvent_getHistorySize(const AInputEvent* motion_event) {
206     return static_cast<const MotionEvent*>(motion_event)->getHistorySize();
207 }
208 
AMotionEvent_getHistoricalEventTime(const AInputEvent * motion_event,size_t history_index)209 int64_t AMotionEvent_getHistoricalEventTime(const AInputEvent* motion_event,
210         size_t history_index) {
211     return static_cast<const MotionEvent*>(motion_event)->getHistoricalEventTime(
212             history_index);
213 }
214 
AMotionEvent_getHistoricalRawX(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)215 float AMotionEvent_getHistoricalRawX(const AInputEvent* motion_event, size_t pointer_index,
216         size_t history_index) {
217     return static_cast<const MotionEvent*>(motion_event)->getHistoricalRawX(
218             pointer_index, history_index);
219 }
220 
AMotionEvent_getHistoricalRawY(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)221 float AMotionEvent_getHistoricalRawY(const AInputEvent* motion_event, size_t pointer_index,
222         size_t history_index) {
223     return static_cast<const MotionEvent*>(motion_event)->getHistoricalRawY(
224             pointer_index, history_index);
225 }
226 
AMotionEvent_getHistoricalX(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)227 float AMotionEvent_getHistoricalX(const AInputEvent* motion_event, size_t pointer_index,
228         size_t history_index) {
229     return static_cast<const MotionEvent*>(motion_event)->getHistoricalX(
230             pointer_index, history_index);
231 }
232 
AMotionEvent_getHistoricalY(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)233 float AMotionEvent_getHistoricalY(const AInputEvent* motion_event, size_t pointer_index,
234         size_t history_index) {
235     return static_cast<const MotionEvent*>(motion_event)->getHistoricalY(
236             pointer_index, history_index);
237 }
238 
AMotionEvent_getHistoricalPressure(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)239 float AMotionEvent_getHistoricalPressure(const AInputEvent* motion_event, size_t pointer_index,
240         size_t history_index) {
241     return static_cast<const MotionEvent*>(motion_event)->getHistoricalPressure(
242             pointer_index, history_index);
243 }
244 
AMotionEvent_getHistoricalSize(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)245 float AMotionEvent_getHistoricalSize(const AInputEvent* motion_event, size_t pointer_index,
246         size_t history_index) {
247     return static_cast<const MotionEvent*>(motion_event)->getHistoricalSize(
248             pointer_index, history_index);
249 }
250 
AMotionEvent_getHistoricalTouchMajor(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)251 float AMotionEvent_getHistoricalTouchMajor(const AInputEvent* motion_event, size_t pointer_index,
252         size_t history_index) {
253     return static_cast<const MotionEvent*>(motion_event)->getHistoricalTouchMajor(
254             pointer_index, history_index);
255 }
256 
AMotionEvent_getHistoricalTouchMinor(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)257 float AMotionEvent_getHistoricalTouchMinor(const AInputEvent* motion_event, size_t pointer_index,
258         size_t history_index) {
259     return static_cast<const MotionEvent*>(motion_event)->getHistoricalTouchMinor(
260             pointer_index, history_index);
261 }
262 
AMotionEvent_getHistoricalToolMajor(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)263 float AMotionEvent_getHistoricalToolMajor(const AInputEvent* motion_event, size_t pointer_index,
264         size_t history_index) {
265     return static_cast<const MotionEvent*>(motion_event)->getHistoricalToolMajor(
266             pointer_index, history_index);
267 }
268 
AMotionEvent_getHistoricalToolMinor(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)269 float AMotionEvent_getHistoricalToolMinor(const AInputEvent* motion_event, size_t pointer_index,
270         size_t history_index) {
271     return static_cast<const MotionEvent*>(motion_event)->getHistoricalToolMinor(
272             pointer_index, history_index);
273 }
274 
AMotionEvent_getHistoricalOrientation(const AInputEvent * motion_event,size_t pointer_index,size_t history_index)275 float AMotionEvent_getHistoricalOrientation(const AInputEvent* motion_event, size_t pointer_index,
276         size_t history_index) {
277     return static_cast<const MotionEvent*>(motion_event)->getHistoricalOrientation(
278             pointer_index, history_index);
279 }
280 
AMotionEvent_getHistoricalAxisValue(const AInputEvent * motion_event,int32_t axis,size_t pointer_index,size_t history_index)281 float AMotionEvent_getHistoricalAxisValue(const AInputEvent* motion_event,
282         int32_t axis, size_t pointer_index, size_t history_index) {
283     return static_cast<const MotionEvent*>(motion_event)->getHistoricalAxisValue(
284             axis, pointer_index, history_index);
285 }
286 
AMotionEvent_getActionButton(const AInputEvent * motion_event)287 int32_t AMotionEvent_getActionButton(const AInputEvent* motion_event) {
288     return static_cast<const MotionEvent*>(motion_event)->getActionButton();
289 }
290 
AMotionEvent_getClassification(const AInputEvent * motion_event)291 int32_t AMotionEvent_getClassification(const AInputEvent* motion_event) {
292     switch (static_cast<const MotionEvent*>(motion_event)->getClassification()) {
293         case android::MotionClassification::NONE:
294             return AMOTION_EVENT_CLASSIFICATION_NONE;
295         case android::MotionClassification::AMBIGUOUS_GESTURE:
296             return AMOTION_EVENT_CLASSIFICATION_AMBIGUOUS_GESTURE;
297         case android::MotionClassification::DEEP_PRESS:
298             return AMOTION_EVENT_CLASSIFICATION_DEEP_PRESS;
299         case android::MotionClassification::TWO_FINGER_SWIPE:
300             return AMOTION_EVENT_CLASSIFICATION_TWO_FINGER_SWIPE;
301         case android::MotionClassification::MULTI_FINGER_SWIPE:
302             return AMOTION_EVENT_CLASSIFICATION_MULTI_FINGER_SWIPE;
303         case android::MotionClassification::PINCH:
304             return AMOTION_EVENT_CLASSIFICATION_PINCH;
305     }
306 }
307 
AMotionEvent_fromJava(JNIEnv * env,jobject motionEvent)308 const AInputEvent* AMotionEvent_fromJava(JNIEnv* env, jobject motionEvent) {
309     MotionEvent* eventSrc = android::android_view_MotionEvent_getNativePtr(env, motionEvent);
310     if (eventSrc == nullptr) {
311         return nullptr;
312     }
313     MotionEvent* event = new MotionEvent();
314     event->copyFrom(eventSrc, true);
315     return event;
316 }
317 
AInputEvent_toJava(JNIEnv * env,const AInputEvent * aInputEvent)318 jobject AInputEvent_toJava(JNIEnv* env, const AInputEvent* aInputEvent) {
319     LOG_ALWAYS_FATAL_IF(aInputEvent == nullptr, "Expected aInputEvent to be non-null");
320     const int32_t eventType = AInputEvent_getType(aInputEvent);
321     switch (eventType) {
322         case AINPUT_EVENT_TYPE_MOTION:
323             return android::android_view_MotionEvent_obtainAsCopy(env,
324                                                                   static_cast<const MotionEvent&>(
325                                                                           *aInputEvent))
326                     .release();
327         case AINPUT_EVENT_TYPE_KEY:
328             return android::android_view_KeyEvent_obtainAsCopy(env,
329                                                                static_cast<const KeyEvent&>(
330                                                                        *aInputEvent))
331                     .release();
332         default:
333             LOG_ALWAYS_FATAL("Unexpected event type %d in AInputEvent_toJava.", eventType);
334     }
335 }
336 
AInputQueue_attachLooper(AInputQueue * queue,ALooper * looper,int ident,ALooper_callbackFunc callback,void * data)337 void AInputQueue_attachLooper(AInputQueue* queue, ALooper* looper,
338         int ident, ALooper_callbackFunc callback, void* data) {
339     InputQueue* iq = static_cast<InputQueue*>(queue);
340     Looper* l = reinterpret_cast<Looper*>(looper);
341     iq->attachLooper(l, ident, callback, data);
342 }
343 
AInputQueue_detachLooper(AInputQueue * queue)344 void AInputQueue_detachLooper(AInputQueue* queue) {
345     InputQueue* iq = static_cast<InputQueue*>(queue);
346     iq->detachLooper();
347 }
348 
AInputQueue_hasEvents(AInputQueue * queue)349 int32_t AInputQueue_hasEvents(AInputQueue* queue) {
350     InputQueue* iq = static_cast<InputQueue*>(queue);
351     return iq->hasEvents();
352 }
353 
AInputQueue_getEvent(AInputQueue * queue,AInputEvent ** outEvent)354 int32_t AInputQueue_getEvent(AInputQueue* queue, AInputEvent** outEvent) {
355     InputQueue* iq = static_cast<InputQueue*>(queue);
356     InputEvent* event;
357     int32_t res = iq->getEvent(&event);
358     *outEvent = event;
359     return res;
360 }
361 
AInputQueue_preDispatchEvent(AInputQueue * queue,AInputEvent * event)362 int32_t AInputQueue_preDispatchEvent(AInputQueue* queue, AInputEvent* event) {
363     InputQueue* iq = static_cast<InputQueue*>(queue);
364     InputEvent* e = static_cast<InputEvent*>(event);
365     return iq->preDispatchEvent(e) ? 1 : 0;
366 }
367 
AInputQueue_finishEvent(AInputQueue * queue,AInputEvent * event,int handled)368 void AInputQueue_finishEvent(AInputQueue* queue, AInputEvent* event, int handled) {
369     InputQueue* iq = static_cast<InputQueue*>(queue);
370     InputEvent* e = static_cast<InputEvent*>(event);
371     iq->finishEvent(e, handled != 0);
372 }
373 
AInputQueue_fromJava(JNIEnv * env,jobject inputQueue)374 AInputQueue* AInputQueue_fromJava(JNIEnv* env, jobject inputQueue) {
375     return android::android_view_InputQueue_getNativePtr(env, inputQueue);
376 }
377